311230023211 has 2 divisors, whose sum is σ = 311230023212. Its totient is φ = 311230023210.

The previous prime is 311230023199. The next prime is 311230023227. The reversal of 311230023211 is 112320032113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311230023211 - 2⁵ = 311230023179 is a prime.

It is not a weakly prime, because it can be changed into another prime (311230003211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155615011605 + 155615011606.

It is an arithmetic number, because the mean of its divisors is an integer number (155615011606).

Almost surely, 2^311230023211 is an apocalyptic number.

311230023211 is a deficient number, since it is larger than the sum of its proper divisors (1).

311230023211 is an equidigital number, since it uses as much as digits as its factorization.

311230023211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311230023211 its reverse (112320032113), we get a palindrome (423550055324).

The spelling of 311230023211 in words is "three hundred eleven billion, two hundred thirty million, twenty-three thousand, two hundred eleven".